A small implantable sheet of solid material that is attached to the spine with screws for spinal immobilization and is made of a material that is not chemically degraded or absorbed via natural body processes (includes implant grade metal such as surgical steel, titanium alloy, or carbon fibre). The device is typically used to provide immobilization and stabilization of spinal segments in the treatment of various spinal instabilities or deformities (e.g., during anterior/posterior cervical, anterior/posterior lumbar, thoracolumbar, and occipital fixation procedures).